研究生: |
徐岳 HSU, YUEH |
---|---|
論文名稱: |
垂直式發光二極體電位降之數學模式研究 Modeling the diode equation with quantum wells for vertical-injection GaN-based light emitting diodes |
指導教授: | 李雄略 |
口試委員: |
陳志臣
張錦裕 |
學位類別: |
碩士 Master |
系所名稱: |
工學院 - 動力機械工程學系 Department of Power Mechanical Engineering |
論文出版年: | 2011 |
畢業學年度: | 99 |
語文別: | 中文 |
論文頁數: | 48 |
中文關鍵詞: | 發光二極體 、電位場 |
相關次數: | 點閱:3 下載:0 |
分享至: |
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LED是近年來非常熱門的研究課題之一,許多文獻引用Shockley方程式來描述LED內部p-n junction處之電流-電壓變化,但由於LED之結構製程不斷改善,因此Shockley方程式可能已經不再適用於當今之LED。
本文參考其他文獻之實驗數據,推導出新的Diode方程式來描述p-n junction處之電流-電壓變化,並且更進一步推導出適用於具有多重量子井結構之LED上,並將其應用至LED模型內進行數值模擬。藉由數值模擬,可以得到LED內部之電位分佈,並且發現溫度對於作用在p-n junction處之電壓,會有很大的影響;除此之外, n電極以及電流阻擋層尺寸大小,對LED也會有很大影響。
根據本文之研究,可以得到在不同溫度以及不同n電極和電流阻擋層尺寸之下,LED之電流-電壓變化,希望能夠在LED之設計與應用上,提供許多幫助。
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